Osan-Kitsune is a kitsune that has brown fur, a pair of fox ears sit on top of her head, several whisker-like marks on her cheeks and long white hair reaches her waist, noticeably she has a more human-like face than most kitsune. Her eyes have black sclerae with gold pupils and her lips are pink. She wears a white nagajuban under her black kimono that has gold leaves patterned on the lower half and the tamoto, a red obi with a yellow obijime tied over it and a light purple obiage tied around them.
During the battle against Yato-no-Kami in GeGeGe no Kitarō: Nippon Bakuretsu!!, Yobuko calls for help from all over Japan, the remaining 47 Yōkai Warriors are revealed once their mark begins to shine. Among those are Osan-Kitsune, who checks her ear when her mark appears. Afterward her power is sent to aid Kitarō in defeating Yato-no-Kami.
Due to the fifth anime adaptation's sudden cancellation at 100 episodes, she is among the 23 Yōkai Warriors that were not revealed aside from the movie.
Osan-Gitsune or just Osan, is the name of a kitsune found in folklore all over Japan, especially in Western Japan, well known for shapeshifting and playing pranks on humans. Tales of her misdeeds are scattered throughout several prefectures, notable Osaka, Hiroshima, Tottori, and most of the Chūgoku region. It is unclear whether these all tales refer to the same individual or different kitsune that have the name Osan. She frequently traveled back and forth between her hometown and the capital. She was also an extremely stylish and influential individual and had a deeply jealous and vindictive personality. Causing lover's quarrels and breaking couples up are things she was especially fond of. She is best known for transforming into beautiful women, but also had a wide range of other transformations, in order to seduce men into betraying their wives or girlfriends. Her seductiveness made men, both young and old, want to visit her again and again. Even when some saw through her disguise, they carried on with their human-fox romantic flings.
- GeGeGe no Kitarō: Nippon Bakuretsu!!
- Yōkai.com - Osan-Gitsune